皮皮学，免费搜题
登录
搜题
【单选题】
为了除去正己烷中的少量己烯,采用下列哪种方法最好?A.
臭氧分解,然后碱洗
B.
浓硫酸洗
C.
Pd +H2
D.
用Br2处理,然后蒸馏
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】根据句子的意思以及括号内的提示完成句子。 1. Don't wake him up.He has just fallen __________. 2. Where does the talk ________ (大概) take place? 3. Such an advertisement most likely a ________ in a newspaper. 4. It's really...
【简答题】单词拼写（共10小题，每小题1分，满分10分） 小题1:His idea received an (热情的，热心的) response. 小题2:I am (尴尬的) to admit that I made many mistakes in this investigation. 小题3:The cost of food and clothing has come down in recent ...
【单选题】She has fallen in love with Jack, _______ find hard to imagine.
A.
who
B.
that
C.
whom
D.
which
【简答题】根据句意及首字母提示，写出可替代句中下划线部分的短语。 小题1:We will be not friends any longer if you copy my homework. n________ 小题2:Lillian worries about her daughter when she is away, even though she has been old enough to ta...
【简答题】用括号内所给词的适当形式填空，一空一词。 1. Anyone who is in_________ (possess) of weapons without permission is considered law - breaking. 2. She was accustomed to_________ (exchange) ideas with her husband. 3. The man ...
【单选题】Section A Directions: In this section, there are 10 incomplete sentences. You are required to complete each one by deciding on the most appropriate word or words from the 4 choices marked A , B, C, an...
A.
who
B.
that
C.
whom
D.
which
【单选题】关于人工被动免疫的叙述,下列哪项是错误的?( )
A.
直接输入含特异性抗的免疫制剂,使机体立即获得特异性免疫力
B.
作用快
C.
维持时间短
D.
可用于紧急预防和治疗
E.
维持时间长
相关题目：
【单选题】She has fallen in love with Jack, _______ find hard to imagine.
A.
who
B.
that
C.
whom
D.
which
参考解析：
知识点：
题目纠错 0
发布
